scholarly journals Adaptation and mitigation synergies to improve sanitation: a case study in Morelos, Mexico

2018 ◽  
Vol 10 (3) ◽  
pp. 671-686 ◽  
Author(s):  
Ines Navarro González ◽  
Blanca Jiménez Cisneros ◽  
Nidya Aponte Hernández ◽  
Raquel Montes Rojas
Keyword(s):  
Wastewater Treatment Plants ◽  
Integrated Management ◽  
Ghg Emissions ◽  
Mitigation Measures ◽  
Septic Tank ◽  
Emissions Reduction ◽  
Baseline Scenario ◽  
Ipcc Guidelines ◽  
Business As Usual

Abstract The management of wastewater is the fifth largest single source of CH4 emissions and the sixth of N2O. Options to improve sanitation within the Morelos State in Mexico were compared applying a modification of the IPCC guidelines to estimate greenhouse gas (GHG) emissions. A 2030 business-as-usual scenario which considers current sanitation practices and 2010 baseline-scenario, showed that septic tanks, the main state option for sanitation, were the principal source of emissions, even higher than from non-controlled wastewater discharges. These scenarios also revealed that the two metropolitan areas were key in terms of mitigation as they contributed 88% of the total GHG emissions. For the 2030A scenario (sanitation + adaptation), it was seen that if the policy of septic tank usage continues, and the existing wastewater treatment plants (WWTPs) are rehabilitated, the GHG emissions would be reduced by 2% compared to the business-as-usual (BAU) scenario. In contrast, if a policy were adopted considering in addition mitigation measures, 26% GHG emissions reduction might be achieved. Additional co-benefits will be obtained in several sectors, including health (diarrheal and dengue diseases control), agriculture, and the environment, performing a more efficient and integrated management of water and achieving savings on the operating costs of WWTPs through co-generation.

scholarly journals Modelling the impacts of challenging 2030 DPRK’s GHGs mitigation targets on DPRK’s energy system

2020 ◽  
Vol 145 ◽  
pp. 02079 ◽  
Author(s):  
Yongjae An ◽  
Haijun Cao ◽  
Cholu Kwon
Keyword(s):  
Ghg Emissions ◽  
Energy Systems ◽  
Energy System ◽  
Interesting Case ◽  
Emissions Reduction ◽  
Energy Technology ◽  
Systems Modelling ◽  
Business As Usual

The DPRK ratified the Paris Agreement on 1st August 2016 and fully committed to achieving goals for reduction of greenhouse gas (GHG) in its Intended Nationally Determined Contribution (INDC) which was submitted on 3rd October 2016. The DPRK’s INDC includes a mitigation and an adaptation component. In the mitigation component, as unconditional contribution, DPRK intends to achieve with domestic resources the reduction of GHG emissions by 8% by 2030 as compared to Business as Usual (BAU) scenario. Moreover, the conditional contributions are measures that could be implemented if additional international financial support, technology transfer and capacity building are received. The national contribution could be increased up to 40% with international support. This paper focuses on these mitigation targets for DPRK by an interesting case study of GHG emissions for a 12 year period from 1990 to 2002. We proposed the DPRK’s GHGs mitigation model by analyzing the Irish TIMES (The Integrated MARKAL–EFOM System) energy systems modelling tool, and proved the technical availability of CO2-8 scenario delivering an 8% emissions reduction target by 2030. We then compared the scenario results in terms of changes in energy technology, the role of energy efficiency and renewable energy.

Mitigation potential for increasing soil organic carbon of rice fields in Bangladesh – a case study

2020 ◽  
Author(s):  
Jack Walton ◽  
Matthias Kuhnert ◽  
Khadiza Begum ◽  
Mohammed Abdul Kader ◽  
Marta Dondini ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
South Asian ◽  
Management Practices ◽  
Ghg Emissions ◽  
Rice Cultivation ◽  
Mitigation Measures ◽  
Emissions Reduction ◽  
Baseline Scenario ◽  
Mitigation Potential

<p>In order to limit global warming to 2°C, a variety of mitigation measures are needed, including those that result in net negative emissions. Soil carbon sequestration (SCS) through changed land management practices has the potential to help meet this need, but it requires further study to represent a viable policy option. Rice cultivation plays a major role in South Asian agriculture, accounting for almost 40% of the crop’s harvested area worldwide. Its greenhouse gas (GHG) profile means it contributes disproportionately more than other crops to the region’s emissions. Adapting rice system management for SCS may therefore represent a compelling mitigation opportunity for the agricultural sectors of South Asian countries. This study uses a process-based modelling approach to compare the performance of two models, ECOSSE and DAYCENT, in assessing the mitigation potential of increasing soil organic carbon (SOC) stocks on a Bangladeshi test site under rice cultivation. A previous study using DAYCENT showed an increase in SOC stock as well as an overall GHG emissions reduction for several management practices relative to the baseline scenario. ECOSSE, calibrated to the same measurements, also showed an increase in SOC and net emissions reduction relative to the baseline. However, the models differed significantly in the extent of mitigation predicted as well as the GHG emissions profile. Given these differences, further analysis is needed to reduce error and uncertainty in these models. The results of this study form a basis for spatial model approaches to assess the mitigation potential of rice production in Bangladesh.</p>

scholarly journals Toward a Low-Carbon Transport Sector in Mexico

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 84 ◽  
Author(s):  
Jorge M. Islas-Samperio ◽  
Fabio Manzini ◽  
Genice K. Grande-Acosta
Keyword(s):  
Greenhouse Gas ◽  
Structural Changes ◽  
Energy Use ◽  
Ghg Emissions ◽  
Mitigation Measures ◽  
Transport Sector ◽  
Baseline Scenario ◽  
Low Carbon ◽  
Net Benefit ◽  
Ghg Mitigation

Considering that the world transport sector is the second largest contributor of global greenhouse gas (GHG) emissions due to energy use and the least decarbonized sector, it is highly recommended that all countries implement ambitious public policies to decarbonize this sector. In Mexico the transport sector generates the largest share of greenhouse gas emissions, in 2014 it contributed with 31.3% of net emissions. Two original scenarios for the Mexican transport sector, a no-policy baseline scenario (BLS) and a low carbon scenario (LCS) were constructed. In the LCS were applied 21 GHG mitigation measures, which far exceeds the proposals for reducing transport sector GHG emissions that Mexico submitted in its National Determined Contributions (NDC). As a result, the proposed LCS describes a sector transformation path characterized by structural changes in freight and passenger mobility, new motor technologies for mobility, introduction of biofuels, price signals, transportation practices and regulations, as well as urban planning strategies, which altogether achieve an accumulated reduction of 3166 MtCO2e in a 25 year period, producing a global net benefit of 240,772 MUSD and a GHG emissions’ reduction of 56% in 2035 in relation to the BLS.

scholarly journals Energy recovery and efficiency improvement for an activated sludge, agro-food WWTP upgrade

2018 ◽  
Vol 13 (4) ◽  
pp. 909-921 ◽  
Author(s):  
Arianna Callegari ◽  
Joanna Boguniewicz-Zablocka ◽  
Andrea G. Capodaglio
Keyword(s):  
Energy Recovery ◽  
Ghg Emissions ◽  
Surface Water Quality ◽  
Regulatory Compliance ◽  
Emissions Reduction ◽  
Aquatic Life ◽  
Treatment Processes ◽  
Local Water ◽  
By Products

Abstract Wastewater treatment's primary purpose is to protect surface water quality, aquatic life, beneficial and recreational uses of waterways, and primarily comply with local water emission standards. Lately, additional requirements were added for these facilities, concerning minimization of a series of sidestream environmental impacts (i.e., odours, generated waste by-products, etc.), air emissions, including CO2, methane and nitrogen greenhouse gases (GHGs), and mitigation of various other likely impacts resulting from energy and chemical use in treatment processes. This paper describes a case study in Northern Europe, where critical analysis of an industrial wastewater treatment plant's present conditions, during an evaluation of upgrade possibilities to improve regulatory compliance, led to a sustainable intervention proposal. According to the formulated proposal, process improvement, energy recovery, and overall savings and GHG emissions reduction could be simultaneously achieved with a series of relatively simple interventions.

The 2020 emissions reduction impact of urban water conservation in California

2012 ◽  
Vol 3 (2) ◽  
pp. 151-162 ◽  
Author(s):  
Benjamin Haley ◽  
Jean-Baptiste Gallo ◽  
Abigail Kehr ◽  
Michael Perry ◽  
David Siao ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Conservation ◽  
Ghg Emissions ◽  
Emissions Reduction ◽  
Urban Water ◽  
Adaptation To Climate Change ◽  
End Use ◽  
Year 2000 ◽  
The Impact

This paper assesses the potential greenhouse gas (GHG) emissions reduction impacts of urban water conservation. Using California as a case study, it estimates this co-benefit of California's statewide urban water conservation goal of 20% per capita reduction by 2020 (relative to a year 2000 baseline). We developed a model of a water supply system to assess the impact of reduced urban water demand on emissions. Embedded energy and emissions were established for each stage of the water supply cycle: supply and conveyance, treatment, distribution, end use and wastewater treatment. We conclude that water conservation, in addition to being an important strategy for adaptation to climate change, represents a significant opportunity for mitigation. Under policies that prioritize savings of water that is heated, the most energy-intensive process in the supply cycle, water conservation offers the potential to conserve 3.5 Mt CO2e in 2020. This result suggests that water conservation could be an important mitigation strategy in other states, even those that are not water-constrained and do not have highly energy intensive supply sources.

Wastewater treatment process impact on energy savings and greenhouse gas emissions

2014 ◽  
Vol 71 (2) ◽  
pp. 303-308 ◽  
Author(s):  
D. Mamais ◽  
C. Noutsopoulos ◽  
A. Dimopoulou ◽  
A. Stasinakis ◽  
T. D. Lekkas
Keyword(s):  
Wastewater Treatment ◽  
Energy Consumption ◽  
Greenhouse Gas ◽  
Energy Savings ◽  
Wastewater Treatment Plants ◽  
Specific Energy Consumption ◽  
Ghg Emissions ◽  
Wastewater Treatment Process ◽  
Conventional Activated Sludge

The objective of this research was to assess the energy consumption of wastewater treatment plants (WWTPs), to apply a mathematical model to evaluate their carbon footprint, and to propose energy saving strategies that can be implemented to reduce both energy consumption and greenhouse gas (GHG) emissions in Greece. The survey was focused on 10 WWTPs in Greece with a treatment capacity ranging from 10,000 to 4,000,000 population equivalents (PE). Based on the results, annual specific energy consumption ranged from 15 to 86 kWh/PE. The highest energy consumer in all the WWTPs was aeration, accounting for 40–75% of total energy requirements. The annual GHG emissions varied significantly according to the treatment schemes employed and ranged between 61 and 161 kgCO2e/PE. The highest values of CO2 emissions were obtained in extended aeration systems and the lowest in conventional activated sludge systems. Key strategies that the wastewater industry could adopt to mitigate GHG emissions are identified and discussed. A case study is presented to demonstrate potential strategies for energy savings and GHG emission reduction. Given the results, it is postulated that the reduction of dissolved oxygen (DO) set points and sludge retention time can provide significant energy savings and decrease GHG emissions.

scholarly journals Meeting National Emissions Reduction Obligations: A Case Study of Australia

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 438 ◽  
Author(s):  
Tek Maraseni ◽  
Kathryn Reardon-Smith
Keyword(s):  
Kyoto Protocol ◽  
Global Climate ◽  
National Level ◽  
Ghg Emissions ◽  
Political Support ◽  
Electricity Production ◽  
Emissions Reduction ◽  
Cumulative Impact ◽  
Commitment Period

Akin to a public good, emissions reduction suffers from the ‘free rider’ syndrome. Although many countries claim that they are meeting their greenhouse gas (GHG) emissions reduction commitments, the average global temperature and GHG emissions continue to rise. This has led to growing speculation that some countries may be taking advantage of the system by effectively exploiting a range of loopholes in global agreements. Using a case study approach, we critically review the evidence from Australia, exploring how Australia has participated in global climate change negotiations and the way in which this emissions intensive country’s national emissions reduction obligations have been met. The findings suggest that: (1) successful negotiation to include Article 3.7 (‘Adjusting the 1990 Baseline’ or ‘the Australia Clause’) in the Kyoto Protocol significantly favored Australia’s ability to meet its First Kyoto Commitment (2008–2012); and (2) successful bargaining for the accounting rule that allowed carbon credits from the first commitment period to be carried over to the second commitment period of the Kyoto Protocol benefitted Australia by 128 MtCO2e. At the national level, a lack of bipartisan political support for an effective mechanism to drive emissions reduction has also been problematic. While the introduction of the Carbon Pricing Mechanism (CPM) in 2012 reduced emissions from electricity production from about 199.1 MtCO2e to 180.8 MtCO2e in 2014, a change of government led to the abolition of the CPM in 2014 and emissions from electricity production subsequently rose to 187 MtCO2e in 2015 and 189 MtCO2e in 2016 with adverse impacts in many sectors as well as Australia’s overall emissions. The current Australian government continues to undermine its commitment to mitigation and the integrity and credibility of its own emissions reductions policy, introducing a softer ‘calculated baseline’ for its own Safeguard Mechanism, which allows companies to upwardly adjust their calculated baselines on the basis of their highest expected emissions, permitting emissions in excess of their historical emissions. While disappointing in the context of the global emissions reduction project, Australia’s actions are sadly not unique and we also provide examples of loopholes exploited by countries participating in a range of other negotiations and emissions reduction projects. Such strategies undoubtedly serve the short-term political and economic interests of these countries; however, it is increasingly apparent that the cumulative impact of such tactics will ultimately impact the entire global community.

scholarly journals Introduction of Energy and Climate Mitigation Policy Issues in Energy - Environment Model of Latvia

2016 ◽  
Vol 53 (6) ◽  
pp. 12-20 ◽  
Author(s):  
G. Klavs ◽  
J. Rekis
Keyword(s):  
Climate Policy ◽  
Policy Development ◽  
Ghg Emissions ◽  
Cost Effective ◽  
Policy Framework ◽  
Emissions Reduction ◽  
Climate Mitigation ◽  
Baseline Scenario ◽  
Policies And Measures ◽  
Energy Efficiency Potential

Abstract The present research is aimed at contributing to the Latvian national climate policy development by projecting total GHG emissions up to 2030, by evaluating the GHG emission reduction path in the non-ETS sector at different targets set for emissions reduction and by evaluating the obtained results within the context of the obligations defined by the EU 2030 policy framework for climate and energy. The method used in the research was bottom-up, linear programming optimisation model MARKAL code adapted as the MARKAL-Latvia model with improvements for perfecting the integrated assessment of climate policy. The modelling results in the baseline scenario, reflecting national economic development forecasts and comprising the existing GHG emissions reduction policies and measures, show that in 2030 emissions will increase by 19.1 % compared to 2005. GHG emissions stabilisation and reduction in 2030, compared to 2005, were researched in respective alternative scenarios. Detailed modelling and analysis of the Latvian situation according to the scenario of non-ETS sector GHG emissions stabilisation and reduction in 2030 compared to 2005 have revealed that to implement a cost effective strategy of GHG emissions reduction first of all a policy should be developed that ensures effective absorption of the available energy efficiency potential in all consumer sectors. The next group of emissions reduction measures includes all non-ETS sectors (industry, services, agriculture, transport, and waste management).

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